Locomotive having combined internal-combustion and electric propulsion system



' E. ZBINDEN LOCOIOTIVB HAVING COIBINED INTERNAL COIBUSTION AND ELBQTRIC PROPULSION SYSTEI F11 D00. 5, 1924 IHHF c cud-w Patented Nov. 3, 1925.

UNITED STATES PATENT OFFICE.

EUGEN ZIBINDEN, or BERN, SWITZERLAND, ASSIGNOR T SULZER rnnnns socrnrn ANONYME, A CORPORATION or SWITZERLAND.

LOGOMOTIVE HAVING COMBINED INTERNAL-GOMBUSTION AND ELECTRIC PROPUL- SION SYSTEM.

Application filed December 5, 1924. Serial No. 754,033.

To all 11:72am it may concern Be it known that I, EUGEN ZBINDEN, a citizen of Switzerland, residing at Bern, Switzerland, Beundenfeldstrasse 32, have invented certain new and useful Improvements in or Relating to Locomotives Having Combined Internal-Combustion and Electric Propulsion Systems, of which the following is a specification,

This invention relates to locomotives having combined internal combustion and electrio propulsion systems, and has for its object to provide a locomotive having the generator placed as low in the frame as possible.

According to this invention the generator is mounted in the frame of the locomotive between two bogies and is driven by two internal combustion engines arranged at each end thereof. The generator shaft may be directly coupled to those of the internal combustion engines, in which case separate bearings are unnecessary or these may be provided if desired.

Three constructions according to the invention are illustrated by way of example in the accompanying drawing, in which Fig. 1 is a diagrammatic side elevation of a locomotive constructed in accordance 0 with the invention, and

Fig. 2 is a diagrammatic side elevation of a modification.

On the bogies at having driving wheels Z) is mounted by means of pivot pins a frame 5 (2 which connects the bogies together and forms a support for the superstructiu'eof the locomotive together with its power unit.

The latter comprises an electric generator 01 arranged between the-bogies and coupled 4 at each end to an internal combustion engine e conveniently disposed over the bogies. As the generator is the part of the power unit which projects downwards to the great est extent, its arrangement above the free space between the bogies will enable it, to-' gether with the internal combustion engines, to be arranged at a lower level above the rails than hitherto,.

This result is secured by dividing the primemover into two units, the bed plates of which havea smaller depth than that of a single engine of double the power.

Such an arrangement of the generator and internal combustion engines has the additional advantage that it is possible to con" nect the generator shaft, shown in F ig-. ure 1 to the shafts ofthe internal combustion engines in such a manner as to render superfluous any separate bearings for the generator shaft, In certain cases it may nevertheless be preferable to provide the latter with bearings as shown in Figure 2. c

Having now particularly described and ascertained the nature of our said invention and 1n what manner the same is to be performed we declare that what we claim is 1. In an electrically propelled internal tween the two bogies and driven by two internal combustion engines arranged at.

either end thereof. -V

2. In an electrically propelled internal combustion locomotive the combination of two bogies with an electric generator supported by the frame of thelocomotive between the twobogies and driven bytwo internal combustion engines arranged at either end thereof, the generator being let into the vehicle frame supporting the internal combustion engines. 7

3.. In an electrically propelled internal combustion locomotive the combination of two bogieswith an electric generator supported by the frame of the locomotive between the two bogies and driven by two internal combustion engines arranged at either end thereof, the shaft of the'generator being supported by the shaft ends of the EUGEN ZBINDEN. 

